NREMT Paramedic

Answer: D - Henry’s law states that the quantity of nitrogen and oxygen that dissolves in the body’s tissues when 33 feet below the surface is half the amount that will dissolve at sea level. Since the body is made up primarily of liquid, gasses that are inhaled will be dissolved in the body in proportion to the partial pressure of each breath. The body uses oxygen, but it does not use nitrogen. Therefore, the primary gas dissolved in the body is nitrogen because it is inert and not used by the body.